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A production method of aluminum alloy plate for rail vehicle underframe plate

A technology of aluminum alloy plates and rail vehicles, which is applied in the field of aluminum alloys, can solve the problems of poor tensile strength, yield strength and elongation, and cannot meet the mechanical performance requirements of rail vehicle chassis plates, and achieve the effect of meeting the mechanical performance requirements

Active Publication Date: 2016-05-04
SOUTHWEST ALUMINUM GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the metal materials used for rail vehicle underframe plates have poor tensile strength, yield strength and elongation, which cannot meet the mechanical performance requirements of rail vehicle underframe plates during high-speed operation

Method used

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  • A production method of aluminum alloy plate for rail vehicle underframe plate
  • A production method of aluminum alloy plate for rail vehicle underframe plate
  • A production method of aluminum alloy plate for rail vehicle underframe plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027]

[0028] Table 1

[0029] The aluminum alloy raw material formed according to the metal mass percentage in Table 1 is melted and cast with a casting size of 400×1320×2500mm, a casting temperature of 710°, a casting speed of 40mm|min, and a cooling water pressure of 0.10MPa. parameters for ingot casting. The aluminum alloy material formed by ingot casting is heated at a constant temperature of 485°; then the heated aluminum alloy is subjected to heat preservation treatment, the heat preservation environment temperature is 455°, and the heat preservation time is 38 hours. Finally, the homogenized annealed aluminum alloy ingots are processed according to the order of 400→380→370→355→330→300→270→240→210→180→150→130→100→70→48→32→23→17→12 12mm thick aluminum alloy plate is formed in hot rolling passes, and then the 12mm aluminum alloy plate is subjected to solution treatment at a solution temperature of 465°C and a holding time of 80 minutes; finally, the solution treated...

Embodiment 2

[0032]

[0033] Table 2

[0034] The aluminum alloy raw material formed according to the metal mass percentage in Table 2 is melted and cast with a casting size of 400×1320×2500mm, a casting temperature of 725°C, a casting speed of 45mm|min, and a cooling water pressure of 0.18MPa. parameters for ingot casting. The aluminum alloy material formed by ingot casting is heated at a constant temperature, the heating temperature is 495°C; then the heated aluminum alloy is subjected to heat preservation treatment, the heat preservation environment temperature is 465°C, and the heat preservation time is 42 hours. Finally, the homogenized annealed aluminum alloy ingots are processed according to the order of 400→380→370→355→330→300→270→240→210→180→150→130→100→70→48→32→23→17→12 12mm thick aluminum alloy plate is formed in hot rolling passes, and then the 12mm aluminum alloy plate is subjected to solution treatment at a solution temperature of 465°C-480°C and a holding time of 80 minu...

Embodiment 3

[0037]

[0038] table 3

[0039] The aluminum alloy raw material formed according to the metal mass percentage in Table 3 is melted and cast with a casting size of 400×1320×2500mm, a casting temperature of 720°C, a casting speed of 45mm|min, and a cooling water pressure of 0.15MPa. parameters for ingot casting. The aluminum alloy material formed by ingot casting is heated at a constant temperature, the heating temperature is 490°C; then the heated aluminum alloy is subjected to heat preservation treatment, the heat preservation environment temperature is 460°C, and the heat preservation time is 40 hours. Finally, the homogenized annealed aluminum alloy ingots are processed according to the order of 400→380→370→355→330→300→270→240→210→180→150→130→100→70→48→32→23→17→12 12mm thick aluminum alloy plate is formed in hot rolling passes, and then the 12mm aluminum alloy plate is subjected to solution treatment under the conditions of solution temperature of 470°C and holding time...

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Abstract

The invention provides a production method of an aluminum alloy plate for a rail-vehicle undercarriage plate. The production method comprises the steps of molding homogenized and annealed aluminum alloy ingots into an aluminum-alloy plate with the thickness of 12mm according to hot-rolling passes of 400, 380, 370, 355, 330, 300, 270, 240, 210, 180, 150, 130, 100, 70, 48, 32, 23, 17 and 12, and carrying out solid-solution treatment for the aluminum alloy plate with the thickness of 12mm under the condition that the solid-solution temperature is 465 to 480 DEG C and the heat-preserving time is 80min; and artificially aging the aluminum alloy plate after the solid-solution treatment under the condition that the aging temperature is 110 to 120 DEG C and the aging time is 16 to 28 hours. By adopting the production method of the aluminum alloy plate for the rail-vehicle undercarriage plate, the tensile strength, the yield strength and the elongation rate of the aluminum alloy obtained through the method are high, and the mechanical property requirement of the high-speed railway undercarriage plate can be met.

Description

technical field [0001] The invention relates to the technical field of aluminum alloys, in particular to a method for producing an aluminum alloy plate for a rail vehicle chassis plate. Background technique [0002] With the continuous development of science and technology, high-speed rail has been widely used in various cities. The continuous speed increase of rail vehicles has put forward higher and higher requirements for the safe operation of the vehicles, among which the quality of the rail vehicle chassis plays a decisive role in the safe operation of the vehicles. [0003] In the prior art, the metal materials used for rail vehicle underframe plates have poor tensile strength, yield strength and elongation, and cannot meet the mechanical performance requirements of rail vehicle underframe plates during high-speed operation. [0004] Therefore, how to meet the requirements of tensile strength, yield strength and elongation of the high-speed rail chassis plate has beco...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22F1/04
Inventor 陈昌云陈新明冯杰
Owner SOUTHWEST ALUMINUM GRP